main {
  width: 800px;
  margin: 30px auto;
  padding: 20px;
  background-color: #dbdada;
}

main h3 {
  text-align: center;
}

main .line {
  margin: 0px auto;
  margin-top: 10px;
  display: flex;
  width: 500px;
  justify-content: space-between;
  position: relative;
}

main .line:nth-child(4) .box .position:nth-child(4) {
  top: 35px;
}

main .line:nth-child(4) .box .position:nth-child(6) {
  top: 65px;
}

main .line:nth-child(4) .box .position:nth-child(8) {
  top: 95px;
}

main .line select {
  width: 400px;
  height: 30px;
}

main .line .box {
  width: 400px;
  display: flex;
  flex-direction: column;
}

main .line input {
  width: 400px;
  height: 30px;
}

main button {
  width: 400px;
  height: 30px;
  border: 0px;
  margin-left: 225px;
  margin-top: 15px;
}

input[type="number"] {
  -moz-appearance: textfield;
}

input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
